Sample TextPaste text containing the values you want a regex for — processed locally
Paste some text above to generate regex patterns
Or click Load Sample to see a demo
Turn example text into a working regex
Paste sample text — log lines, CSV data, scraped content, anything — and instantly see which common patterns it contains, with a ready-to-use regex for each one. Covers emails, URLs, IPv4/IPv6 addresses, MAC addresses, UUIDs, timestamps, dates, phone numbers, hex colors, currency, hashtags, and mentions.
Frequently Asked Questions
- How does this generate a regex from text?
- It doesn't invent a new pattern from scratch — it scans your text against a curated library of common patterns (emails, URLs, dates, IPs, UUIDs, phone numbers, hex colors, currency, hashtags, and more) and shows you which ones matched, along with the regex that matched them.
- What if my text doesn’t match any known pattern?
- You'll see "No recognizable patterns found." This tool detects common, well-known formats — for a fully custom pattern, write it directly in the Regex Tester and refine it against your test string.
- Can I test a generated regex further?
- Yes. Click "Test in Regex Tester" on any detected pattern to open it in the Regex Tester with the pattern and flags pre-filled, so you can tweak it and see live match highlighting.
- Is my text sent to a server?
- No. Pattern detection runs entirely in your browser — nothing is sent anywhere.